Gwen Stefani and Blake Shelton Couple Up at Friend's Wedding in Nashville

Are those wedding bells we hear? Well, yes — but they're not for Blake Shelton and Gwen Stefani exactly. America's latest gossip-inducing duo took their relationship to the next level this weekend — with a wedding! But, before you get too excited, it wasn't their own nuptials that they were celebrating.

Shelton's hair stylist, Amanda Craig, tied the knot this weekend in Nashville and the country crooner was one of the guests in attendance, inviting his fellow Voice judge and girlfriend to join him for the festivities, People reports. The two were spotted arriving together at the wedding sporting coordinated black outfits (Shelton in a suit, Stefani in a dark, floor-length ensemble that she finished off with a top knot). Inviting your significant other to a wedding? We say that's a major relationship milestone!

According to Just Jared, while reportedly leaving the ceremony, the adoring couple got caught in the rain, leaving them to share an umbrella.

This isn't the first time these two have shown their affection for one another in public! The blonde singer recently tweeted out a musical message about making some upcoming music while posting a photo in the studio. The caption for the foreshadowing snapshot read, "In the studio w @justin_tranter @imjmichaels @GregKurstin #musicismagic gx."

"The Sweet Escape" singer also posted a telling selfie on Instagram that showed her wearing what looks to be Shelton's country cap. What seems to be the singer's first Instagram official display of affection towards her country beau shows a glasses-adorned Stefani with the caption, "#goodmorning gx."

Shelton and Stefani's fans and followers were shocked when news broke of the pair's romantic relationship this fall. The Voice coaches seemed to have bonded over their respective breakups — Shelton and wife Miranda Lambert announced their divorced in July, while Stefani and husband Gavin Rossdale announced their split just two weeks later.

"They've been able to support and relate to each other and have gotten through a very difficult and now triumphant time in their lives," a source recently told People.

Just last spring, Stefani opened up to Cosmopolitan about her more than a decade-long marriage to Rossdale (before things took a rocky turn with their divorce). "We go through so much together — it's a miracle that we could stay together this long," Stefani told the magazine.